With what, eternity? Eternity is a long time to be wrong. Why would you want to gamble with something as important as your eternal destiny? It takes only a moment to trust Christ for your salvation. There will be an eternity of pain and regret if you don't.
You don't take chances with guns do you? You don't take chances and run red lights do you? Why would you take a chance on something that is far more important than these? Don't take a chance on something eternal. It isn't worth it.
Jesus said that He was the only way to God. He forgave sins, walked on water, calmed a storm with a command, raised people from the dead, and rose from the dead Himself. No one else in all of history has done that. If He can do all that, don't you think you should listen to Him?